It’s now 70 years since theatre visionary Stephen Joseph launched the UK’s first theatre-in-the-round company in Scarborough. Marking the anniversary, the theatre – now named after its founder and in its “new” home since 1996 – celebrated with a weekend of activities dedicated to the prolific playwright and the audiences and actors who love him. That sense of adoration is apparent the moment you step inside the door of the former Odeon cinema, now known as the SJT. Actors love him, audiences love him, and the Stephen Joseph Theatre almost certainly wouldn’t exist without him. Which of those accolades would tickle him the most is a question only Ayckbourn can answer.